diff --git a/.gitignore b/.gitignore
index 7a4d56bd4e..3c038a7794 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,6 +8,7 @@
 
 *~
 *.swp
+*.swo
 
 *.pyc
 
diff --git a/conf/airframes/tudelft/.conf.xml.swo b/conf/airframes/tudelft/.conf.xml.swo
deleted file mode 100644
index fbc6a01727..0000000000
Binary files a/conf/airframes/tudelft/.conf.xml.swo and /dev/null differ